Wireless issues with an Asus N76VZ / Ubuntu 12.04/Kernel 3.4/Intel Wireless-N 2230

Hi everyone, fairly new to Linux. I've installed Ubuntu 12.04 on my Asus N76VZ, and I'm having issues with the wireless connection dropping every few minutes. I can disconnect and reconnect and it will then work again.

I've already tried disabling IPV6, but that doesn't seem to do anything for me.

From: -lspci
Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

From: -ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:5791 errors:0 dropped:0 overruns:0 frame:0
TX packets:5791 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:558665 (558.6 KB) TX bytes:558665 (558.6 KB)

wlan0 Link encap:Ethernet HWaddr 68:5d:43:74:0f:09
inet addr:192.168.1.36 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:136930 errors:0 dropped:0 overruns:0 frame:0
TX packets:85434 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:175053810 (175.0 MB) TX bytes:11473651 (11.4 MB)

From -iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"SINGTEL-2042"
Mode:Managed Frequency:2.462 GHz Access Point: 98:2C:BE:ED:DB:B2
Bit Rate=6 Mb/s Tx-Power=0 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=41/70 Signal level=-69 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:3741 Invalid misc:457 Missed beacon:0

And from: sudo lshw -C network
*-network
description: Wireless interface
product: Centrino Wireless-N 2230
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: c4
serial: 68:5d:43:74:0f:09
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.4.0-030400-generic firmware=18.168.6.1 ip=192.168.1.36 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:45 memory:f7900000-f7901fff
*-network UNCLAIMED
description: Ethernet controller
product: AR8161 Gigabit Ethernet
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:04:00.0
version: 08
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list
configuration: latency=0
resources: memory:f7800000-f783ffff ioport:d000(size=128)

Let's try a driver parameter. Please do:

Code:

---

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

---

If it helps, we'll write one quick file and make it persistent.

This seems to have helped! How do I make that permanent?

Quote:

---

Originally Posted by blinduck

This seems to have helped! How do I make that permanent?

---

Please do:

Code:

---

sudo gedit /etc/modprobe.d/iwlwifi.conf

---

A new, empty file will open. Use kate or leafpad or any text editor if you don't have gedit. Add a single line:

Code:

---

options iwlwifi 11n_disable=1

---

Proofread, save and close the text editor. You should be all set.

So the searchers can find the answer, please use thread tools at the top to mark Solved.

Have fun!

Ok scratch that, nope it doesn't seem to work. Connection still drops frequently. Seems to be a random thing, doesn't follow any pattern..

Any other suggestions?

You might try a different parameter:

Code:

---

sudo gedit /etc/modprobe.d/iwlwifi.conf

---

Change the contents to:

Code:

---

options iwlwifi 11n_disable=1 bt_coex_active=N

---

Proofread, save and close the text editor. Reboot and let us have your report.

I also just bought an Asus N76VZ V2G today.
Have had it for only 4 hours, and already have the same problem with the wireless network...
REALLY anoying... And I've tried to disable it in the powersafe mode, but nothing makes a difference...
I would give anything for a solution, since the computer is sooooo nice in every other way. But this is kind of important to get fixed... Seems like it might be a problem with this specifik model. But it's gotta be possible to solve it somehow, right ?

Quote:

---

Originally Posted by Asus User

I also just bought an Asus N76VZ V2G today.
Have had it for only 4 hours, and already have the same problem with the wireless network...
REALLY anoying... And I've tried to disable it in the powersafe mode, but nothing makes a difference...
I would give anything for a solution, since the computer is sooooo nice in every other way. But this is kind of important to get fixed... Seems like it might be a problem with this specifik model. But it's gotta be possible to solve it somehow, right ?

---

What is your experience after the solution I proposed above?

I havn't tried your solution yet.
I've ready that Intel in generel have major problems with many of their network cards.

I assume that is the same problem in this case.
My network card is an Intel Centrino Wireless-N 2230.

Therefore I will try to look for some driver updates.

If that doesn't work, I might give your solution a try :)

Quote:

---

Originally Posted by chili555

You might try a different parameter:

Code:

---

sudo gedit /etc/modprobe.d/iwlwifi.conf

---

Change the contents to:

Code:

---

options iwlwifi 11n_disable=1 bt_coex_active=N

---

Proofread, save and close the text editor. Reboot and let us have your report.

---

Hmm nope, that isn't working either. Connection still dropping really often.

@Asus User: If you manage to make it work, please post your solution here as well! This problem is making it really hard for me to work with ubuntu.

Got exactly the same problem with the Asus N56vz with the Intel centrino 2230 wireless card. It seems to only occur on N-networks. Have no problems at all with my home G-network.

The fix didn't work either... still disconnects every few minutes

Quote:

---

Originally Posted by chili555

Let's try a driver parameter. Please do:

Code:

---

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

---

If it helps, we'll write one quick file and make it persistent.

---

It worked for me!
Dell Inspiron 7520
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

Quote:

---

Originally Posted by chili555

Let's try a driver parameter. Please do:

Code:

---

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

---

If it helps, we'll write one quick file and make it persistent.

---

That worked for me, too!

Asus N76V
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)

Great, thank you!

this seems to be a persistent problem with all intel Centrino variants, i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?

Additionally after a kernel update sometimes the problem comes back and becomes persistent regardless of what solution may have worked in the past.

Quote:

---

i have option of ditching my Centrino and using Killer's Bigfoot Wireless instead, are there similar issues with that particular wifi card?

---

The Bigfoot wireless I am familiar with uses the driver ath9k. Search this forum and see if there are ever any disconnects and drops or slow speeds with ath9k. Here, for example: http://ubuntuforums.org/showthread.p...ighlight=ath9k

Have you tried turning N speeds off at the router? My iwlwifi device is about perfect.

Quote:

---

Originally Posted by chili555

Let's try a driver parameter. Please do:

Code:

---

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi 11n_disable=1

---

If it helps, we'll write one quick file and make it persistent

Please do:

Code:

---

sudo gedit /etc/modprobe.d/iwlwifi.conf

---

A new, empty file will open. Use kate or leafpad or any text editor if you don't have gedit. Add a single line:

Code:

---

options iwlwifi 11n_disable=1

---

Proofread, save and close the text editor. You should be all set.

So the searchers can find the answer, please use thread tools at the top to mark Solved.

Have fun!

---

Dell Vostro 3650 - Does the trick for this machine too, thanks for your posts